MGWILL 42" Mulching Kit with Blade Compatible with MTD Cub Cdet RZT-42 Troy-Bilt Craftsman 631-05195A, 19A70041, 942-0616, 742-0616

What It Is

This MGWILL 42" mulching kit replaces the standard discharge or bagging setup on select MTD, Cub Cadet, Troy-Bilt, and Craftsman zero-turn mowers. It includes three blades and a blocking plate to recirculate clippings into fine mulch, ideal for leaf management and leaving nutrients on the lawn.

Fitment & Compatibility

Before buying, verify your deck is exactly 42 inches (cutting width). This kit is designed for MTD-based ZT models like the Cub Cadet RZT-42, Troy-Bilt Mustang 42, and Craftsman ZT 7000 series. The OEM part numbers it replaces are 631-05195A, 19A70041, 942-0616, and 742-0616. Measure your blade length—stock blades are typically 19.5" long with a 1" center hole and 5-point star drive. Check your deck’s spindle pattern: this kit uses three blades spaced for a 42" cut. If your mower has a 46" or 50" deck, it won’t fit. Also confirm your spindles accept a 5-point star mounting hole—some older models use a round hole with keyway.

Key Things to Know

• Installation difficulty: Easy to moderate. You’ll need a socket wrench and a blade removal tool or block of wood. Expect 30–45 minutes for first-time install.
• Quality: Blades are heat-treated steel, but some users report they’re slightly thinner than OEM. Check balance before mounting—unbalanced blades cause vibration and poor cut.
• Common gotcha: The included blocking plate may need minor trimming to fit under some decks with existing baffles. Test-fit before bolting everything down.
• Performance: Best for dry grass. Wet or tall grass can clump under the deck; you may need to slow down or make two passes.

Should You Buy It

If you own a 42" MTD-based zero-turn and want to convert to mulching without paying OEM prices, this kit is a solid value. It’s not ideal for commercial use or heavy-duty mowing, but for residential lawns with regular cutting, it works well. Skip it if you prefer bagging or have a deck with unusual spindle spacing.